chore: add bottles for macos-11 and ubuntu-20.04

Author: mrexox

Diff for: .github/workflows/tests.yml

@@ -8,7 +8,7 @@ jobs:
   test-bot:
     strategy:
       matrix:
-        os: [ubuntu-22.04, macos-12]
+        os: [ubuntu-20.04, ubuntu-22.04, macos-12, macos-11]
     runs-on: ${{ matrix.os }}
     env:
       HOMEBREW_NO_INSTALL_FROM_API: 1